The rapid development of high-speed digital circuits (such as 5G, data centers, and high-performance computing) and high-speed serial interfaces (such as PCIe, USB4, and DDR5) has placed higher demands on signal integrity (SI) in printed circuit boards (PCBs).
With the advancement of technology and the overall improvement in technical capabilities, an increasing number of electronic devices are moving toward thinner designs and higher integration.
In the field of high-end printed circuit board (PCB) manufacturing, milled vias (such as dogbone vias and small square vias) serve as core microstructures for interlayer interconnection and precise signal transmission.
Some printed circuit boards (PCBs) require the large copper surfaces to be coated with gold, a process known as “gold plating.”
As sectors such as consumer electronics, medical devices, and automotive electronics continue to evolve toward miniaturization and high integration, FPC (flexible printed circuit boards)—as core interconnect components—are seeing their circuit designs evolve toward fine lines (line width/spacing ≤ 50 μm), high-density layouts, and complex stepped structures (such as stacked multi-layer via stacks).
As a new type of stencil-free solder paste application technology, solder paste spray printing has demonstrated significant practical value in the production of military electronic products due to its convenience and flexibility.
Before a new PCB assembly model enters mass production, it typically requires validation through multiple prototype versions.
With the trend toward smarter and more integrated electronic products, a wide range of BGAs, fine-pitch components, and ultra-small devices are now in widespread use, making SMT technology the mainstream process for electronic assembly.
Solder mask application is a core process in PCB manufacturing that determines yield and reliability, and pre-treatment is the cornerstone of its success.
The primary purpose of pretreatment in each PCB manufacturing process is to achieve two key objectives: cleaning and surface roughening.
